20307122832 has 40 divisors (see below), whose sum is σ = 54740942784. Its totient is φ = 6474734464.

The previous prime is 20307122783. The next prime is 20307122861. The reversal of 20307122832 is 23822170302.

It is a self number, because there is not a number n which added to its sum of digits gives 20307122832.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9195963 + ... + 9198170.

Almost surely, 2^20307122832 is an apocalyptic number.

It is an amenable number.

20307122832 is an abundant number, since it is smaller than the sum of its proper divisors (34433819952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20307122832 is a wasteful number, since it uses less digits than its factorization.

20307122832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18394167 (or 18394161 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 20307122832 in words is "twenty billion, three hundred seven million, one hundred twenty-two thousand, eight hundred thirty-two".